<script setup lang="ts">
import { loginUser,registerUser,registerStudentClass } from '@/api/login'
import { Login,Register  } from '@/types/login'
import { baseResponse } from '@/types/public'
import { User, Lock } from '@element-plus/icons-vue'
import { ref, watch } from 'vue'
import { useUserStore } from '@/stores'
import { useRouter } from 'vue-router'

const isRegister = ref(false)
const form = ref()
const userRadio = ref(true)
const studentClass = (await registerStudentClass()).data

// 整个的用于提交的form数据对象
const formModel = ref({
  username: '',
  class: '',
  password: '',
  repassword: ''
})
// 整个表单的校验规则
// 1. 非空校验 required: true      message消息提示，  trigger触发校验的时机 blur change
// 2. 长度校验 min:xx, max: xx
// 3. 正则校验 pattern: 正则规则    \S 非空字符
// 4. 自定义校验 => 自己写逻辑校验 (校验函数)
//    validator: (rule, value, callback)
//    (1) rule  当前校验规则相关的信息
//    (2) value 所校验的表单元素目前的表单值
//    (3) callback 无论成功还是失败，都需要 callback 回调
//        - callback() 校验成功
//        - callback(new Error(错误信息)) 校验失败
const rules = {
  username: [
    { required: true, message: '请输入用户名', trigger: 'blur' },
    { min: 5, max: 10, message: '用户名必须是 5-10位 的字符', trigger: 'blur' }
  ],
  password: [
    { required: true, message: '请输入密码', trigger: 'blur' },
    {
      pattern: /^[a-zA-Z0-9]{5,15}$/,
      message: '密码必须是 6-15位 的非空字符',
      trigger: 'blur'
    }
  ],
  repassword: [
    { required: true, message: '请输入密码', trigger: 'blur' },
    {
      pattern: /^\S{6,15}$/,
      message: '密码必须是 6-15位 的非空字符',
      trigger: 'blur'
    },
    {
      // eslint-disable-next-line @typescript-eslint/no-explicit-any
      validator: (rule: any, value: string, callback: (arg0: Error | undefined) => void) => {
        // 判断 value 和 当前 form 中收集的 password 是否一致
        if (value !== formModel.value.password) {
          callback(new Error('两次输入密码不一致'))
        } else {
          callback(undefined) // 就算校验成功，也需要callback
        }
      },
      trigger: 'blur'
    }
  ]
}
const router = useRouter()

const register = async () => {
  // 注册成功之前，先进行校验，校验成功 → 请求，校验失败 → 自动提示
  await form.value.validate()
  //true注册志愿者，false注册组织者
  let res: baseResponse<string>
  if (userRadio.value) {
    res = await registerUser(new Register(formModel.value.username, formModel.value.password,0,formModel.value.class))
  } else {
    res = await registerUser(new Register(formModel.value.username, formModel.value.password, 1))
  }
  userStore.setToken(res.data)
  isRegister.value = false
  router.push('/')
}

const userStore = useUserStore()

const login = async () => {
  await form.value.validate()
    const res = await loginUser(new Login(formModel.value.username, formModel.value.password))
    userStore.setToken(res.data)

  router.push('/')
}

// 切换的时候，重置表单内容
watch(isRegister, () => {
  formModel.value = {
    username: '',
    class: '',
    password: '',
    repassword: ''
  }
})
</script>
<template>
  <el-row class="login-page">
    <el-col :span="12" class="bg"></el-col>
    <el-col :span="6" :offset="3" class="form">
      <!-- 注册相关表单 -->
      <el-form :model="formModel" :rules="rules" ref="form" size="large" autocomplete="off" v-if="isRegister">
        <el-form-item>
          <h1>注册</h1>
        </el-form-item>
        <el-form-item prop="username">
          <el-input v-model="formModel.username" :prefix-icon="User" placeholder="请输入用户名"></el-input>
        </el-form-item>
        <el-form-item v-if="userRadio" prop="class">
          <el-select v-model="formModel.class" placeholder="请选择班级" style="width: 100%">
            <el-option v-for="(item,index) in studentClass" :key="index" :label="item.className" :value="item.className" />
          </el-select>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="formModel.password" :prefix-icon="Lock" type="password" placeholder="请输入密码"></el-input>
        </el-form-item>
        <el-form-item prop="repassword">
          <el-input v-model="formModel.repassword" :prefix-icon="Lock" type="password" placeholder="请输入再次密码"></el-input>
        </el-form-item>
        <el-form-item>
          <!-- <el-checkbox>记住我</el-checkbox> -->
          <el-radio-group v-model="userRadio" class="flex">
            <el-radio-button :label="true">学生</el-radio-button>
            <el-radio-button :label="false">老师</el-radio-button>
          </el-radio-group>
          <!-- <el-link type="primary" :underline="false">忘记密码？</el-link> -->
        </el-form-item>
        <el-form-item>
          <el-button @click="register" class="button" type="primary" auto-insert-space> 注册 </el-button>
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = false"> ← 返回 </el-link>
        </el-form-item>
      </el-form>

      <!-- 登录相关表单 -->
      <el-form :model="formModel" :rules="rules" ref="form" size="large" autocomplete="off" v-else>
        <el-form-item>
          <h1>登录</h1>
        </el-form-item>
        <el-form-item prop="username">
          <el-input v-model="formModel.username" :prefix-icon="User" placeholder="请输入用户名"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="formModel.password" name="password" :prefix-icon="Lock" type="password" placeholder="请输入密码"></el-input>
        </el-form-item>
        <el-form-item>
          <el-button @click="login" class="button" type="primary" auto-insert-space>登录</el-button>
        </el-form-item>
        <el-form-item>
          <div class="flex">
            <el-link type="info" @click="isRegister = true">注册</el-link>
          </div>
        </el-form-item>
      </el-form>
    </el-col>
  </el-row>
</template>

<style scoped lang="scss">
.login-page {
  height: 100vh;
  width: 100%;
  background-color: #fff;

  .bg {
    background: url('@/assets/login.png') no-repeat center / cover;
    border-radius: 0 20px 20px 0;
  }

  .form {
    display: flex;
    flex-direction: column;
    justify-content: center;
    user-select: none;

    .title {
      margin: 0 auto;
    }

    .button {
      width: 100%;
    }

    .flex {
      width: 100%;
      display: flex;
      justify-content: space-between;
    }
  }
}
</style>
